<template>
  <div className="http404-container">
    <div className="http404">
      <div className="pic-404">
        <img className="pic-404__parent" src="/img/404-images/404.png">
        <img className="pic-404__child left" src="/img/404-images/404-cloud.png">
        <img className="pic-404__child mid" src="/img/404-images/404-cloud.png">
        <img className="pic-404__child right" src="/img/404-images/404-cloud.png">
      </div>
      <div className="text-404">
        <div className="text-404__oops">404 Not Found</div>
        <div className="text-404__info">
          <!--          All rights reserved-->
          <!--          <a-->
          <!--              style="color:#20a0ff"-->
          <!--              href="https://wallstreetcn.com"-->
          <!--              target="_blank"-->
          <!--          >wallstreetcn</a>-->
        </div>
        <div className="text-404__info">
          请检查您输入的 URL 是否正确，或单击下面的按钮以返回之前的页面。
        </div>
        <a @click="backHome()" className="text-404__return-home">返回 {{num}}</a>
      </div>
    </div>
  </div>
</template>

<script setup>
import { useRouter } from 'vue-router'
import { onUnmounted, ref } from 'vue'

const router = useRouter()
let num = ref(5)

let countDown = setInterval(()=>num.value > 0 ? num.value-- : backHome(),1000)

onUnmounted(()=>clearInterval(countDown))

const backHome = ()=> router.back()
</script>

<style lang="less" scoped>
.http404-container {
  transform: translate(-50%, -50%);
  position: absolute;
  top: 40%;
  left: 50%;
}

.http404 {
  position: relative;
  width: 1200px;
  padding: 0 50px;
  overflow: hidden;

  .pic-404 {
    position: relative;
    float: left;
    width: 600px;
    overflow: hidden;

    &__parent {
      width: 100%;
    }

    &__child {
      position: absolute;

      &.left {
        width: 80px;
        top: 17px;
        left: 220px;
        opacity: 0;
        animation-name: cloudLeft;
        animation-duration: 3s;
        animation-timing-function: linear;
        animation-fill-mode: forwards;
        animation-delay: 1s;
        animation-iteration-count:infinite;
      }

      &.mid {
        width: 46px;
        top: 10px;
        left: 420px;
        opacity: 0;
        animation-name: cloudMid;
        animation-duration: 3s;
        animation-timing-function: linear;
        animation-fill-mode: forwards;
        animation-delay: 1.2s;
        animation-iteration-count:infinite;
      }

      &.right {
        width: 62px;
        top: 100px;
        left: 500px;
        opacity: 0;
        animation-name: cloudRight;
        animation-duration: 3s;
        animation-timing-function: linear;
        animation-fill-mode: forwards;
        animation-delay: 1s;
        animation-iteration-count:infinite;
      }

      @keyframes cloudLeft {
        0% {
          top: 17px;
          left: 220px;
          opacity: 0;
        }
        20% {
          top: 33px;
          left: 188px;
          opacity: 1;
        }
        80% {
          top: 81px;
          left: 92px;
          opacity: 1;
        }
        100% {
          top: 97px;
          left: 60px;
          opacity: 0;
        }
      }
      @keyframes cloudMid {
        0% {
          top: 10px;
          left: 420px;
          opacity: 0;
        }
        20% {
          top: 40px;
          left: 360px;
          opacity: 1;
        }
        70% {
          top: 130px;
          left: 180px;
          opacity: 1;
        }
        100% {
          top: 160px;
          left: 120px;
          opacity: 0;
        }
      }
      @keyframes cloudRight {
        0% {
          top: 100px;
          left: 500px;
          opacity: 0;
        }
        20% {
          top: 120px;
          left: 460px;
          opacity: 1;
        }
        80% {
          top: 180px;
          left: 340px;
          opacity: 1;
        }
        100% {
          top: 200px;
          left: 300px;
          opacity: 0;
        }
      }
    }
  }

  .text-404 {
    position: relative;
    float: left;
    width: 300px;
    padding: 30px 0;
    overflow: hidden;

    &__oops {
      font-size: 32px;
      font-weight: bold;
      line-height: 40px;
      color: #1482f0;
      opacity: 0;
      margin-bottom: 20px;
      animation-name: slideUp;
      animation-duration: 0.5s;
      animation-fill-mode: forwards;
    }

    &__headline {
      font-size: 20px;
      line-height: 24px;
      color: #222;
      font-weight: bold;
      opacity: 0;
      margin-bottom: 10px;
      animation-name: slideUp;
      animation-duration: 0.5s;
      animation-delay: 0.1s;
      animation-fill-mode: forwards;
    }

    &__info {
      font-size: 13px;
      line-height: 21px;
      color: grey;
      opacity: 0;
      margin-bottom: 30px;
      animation-name: slideUp;
      animation-duration: 0.5s;
      animation-delay: 0.2s;
      animation-fill-mode: forwards;
    }

    &__return-home {
      display: block;
      float: left;
      width: 110px;
      height: 36px;
      background: #1482f0;
      border-radius: 100px;
      text-align: center;
      color: #ffffff;
      opacity: 0;
      font-size: 14px;
      line-height: 36px;
      cursor: pointer;
      animation-name: slideUp;
      animation-duration: 0.5s;
      animation-delay: 0.3s;
      animation-fill-mode: forwards;
    }

    @keyframes slideUp {
      0% {
        transform: translateY(60px);
        opacity: 0;
      }
      100% {
        transform: translateY(0);
        opacity: 1;
      }
    }
    .text-404__return-home{
      text-decoration: none;
    }
  }
}
</style>
